QPDF is a C++ library and set of programs that inspect and manipulate the structure of PDF files. It can encrypt and linearize files, expose the internals of a PDF file, and do many other operations useful to end users and PDF developers.

A whole bunch of utilities for primitive manipulation of
graphic images. Wide array of converters
from one graphics format to another. E.g.
from g3 fax format to jpeg. Many basic graphics
editing tools such as magnifying and cropping.

SpamAssassin for Win32 is a free and powerful anti-spam filter for Windows. Includes a resident daemon for mail servers and a user-friendly personal spam filter that works with any POP3 account and any email client.

Win32::GUI is a Win32-platform native graphical user interface toolkit for perl.
basically, it's an XS implementation of most of the functions found in user32.dll and gdi32.dll,
with an object oriented perl interface and an event-based dialog model.

This Database Test Suite aims to create database workload test kits used to simulate heavy user loads for OLTP, Decision Support, and e-commerce database transactions. These test kits can also be used to gather performance results for Linux and other

This is a C library to check the validity of German and Austrian Bank Account Numbers. All currently defined test methods by Deutsche Bundesbank (May 2015: 00 to E2) are implemented. Modules for AWK, Perl, PHP, Python, Ruby, C#.net and VB.net are included too.
The package includes also an IBAN converter to generate (german) IBANs and BICs from account data. All currently defined IBAN rules by Deutsche Bundesbank are implemented (May 2015: 57 rules) and tested against independent solutions.

Generic z80 Cross compiler with generic libraries. The Cambridge z88 was the original target, but libraries are also available for Spectrum, ZX81, VZ200, Sharp MZ, CP/M, TI8x calculators, Sharp OZ, Xircom REX, Sam Coupe and many others

A disassembler for the linux platform. Currently this supports x86 ELF files assumed to be written in C and output to intel- syntax assembly language; however the design is modular and replacements for any of these can be written.

The LPRng software is an enhanced, extended, and portable implementation of the Berkeley LPR print spooler functionality. While providing the same interface and meeting RFC1179 requirements, the implementation is completely new and provides suppo

The Introspector enables the programming tools that deal with source code such as the compiler to communicate in a standard and neutral manner reducing the accidental cost of programming. http://github.com/h4ck3rm1k3/